That's interesting D/Girl !
I remember Lee from his days on the jewellery channel. There are loads of these 'one trick' ponies under various 'management agencies', and are available to flog battery lights on QVC (aka Gill Gaunt) to dressing up as a chicken outside KFC !! or, like the video above, to flog new homes on the internet or on programmes like Coast v Country, Homes in the Sun, Escape to the Country etc etc.
When shoppy telly started off a few years ago, with the likes of the auction channels (who remembers the defunct Auction World ??), it was the ahem 'breeding' ground which kick started the careers of those we see now on the box.